In parser config test, use a filename less likely to exist (#1362)

* In parser config test, use a filename less likely to exist

The file /usr/share/empty is not unique enough to guarantee that it does
not exist, and the test seems to require that there be no file or
directory with that name.

On Fedora, the file /usr/share/empty is present on every single system.

---------

Signed-off-by: Scott K Logan <[email protected]>

Author: cottsay

test/integration/parser_config.cc

@@ -50,10 +50,10 @@ TEST(ParserConfig, GlobalConfig)
 
   ASSERT_TRUE(sdf::ParserConfig::GlobalConfig().FindFileCallback());
   EXPECT_EQ("test/dir2",
-      sdf::ParserConfig::GlobalConfig().FindFileCallback()("empty"));
+      sdf::ParserConfig::GlobalConfig().FindFileCallback()("should_not_exist"));
   // sdf::findFile requires explicitly enabling callbacks
-  EXPECT_EQ("test/dir2", sdf::findFile("empty", false, true));
-  EXPECT_EQ("test/dir2", sdf::findFile("empty", true, true));
+  EXPECT_EQ("test/dir2", sdf::findFile("should_not_exist", false, true));
+  EXPECT_EQ("test/dir2", sdf::findFile("should_not_exist", true, true));
 }
 
 /////////////////////////////////////////////////
@@ -81,9 +81,10 @@ TEST(ParserConfig, NonGlobalConfig)
   EXPECT_EQ(it->second.front(), testDir);
 
   ASSERT_TRUE(config.FindFileCallback());
-  EXPECT_EQ("test/dir2", config.FindFileCallback()("empty"));
-  EXPECT_EQ("test/dir2", sdf::findFile("empty", false, true, config));
-  EXPECT_EQ("test/dir2", sdf::findFile("empty", true, true, config));
+  EXPECT_EQ("test/dir2", config.FindFileCallback()("should_not_exist"));
+  EXPECT_EQ("test/dir2",
+      sdf::findFile("should_not_exist", false, true, config));
+  EXPECT_EQ("test/dir2", sdf::findFile("should_not_exist", true, true, config));
 
   EXPECT_TRUE(sdf::ParserConfig::GlobalConfig().URIPathMap().empty());
   EXPECT_FALSE(sdf::ParserConfig::GlobalConfig().FindFileCallback());